Wear means for railway car truck connections



J y 1942- M. R. HANSEN ET AL WEAR MEANS FOR RAILWAY CAR TRUCK CONNECTIONS Filed July 2, 1940 gwutwvbo zdl ,MRHeznaew 6- Orr sir,

Patented July 7, 1942 U N IT ED STATE 5 PAT EN T O F F'ICE WEAR MEANS FOR RAILWAY CAR TRUCK CONNECTIONS Merritt R. Hansen and Claude L. Orr, Bexley, Ohio, assignors to The Buckeye. Steel Castings Company, Columbus, Ohio, a corporation of Ohio Application July 2, 1940, Serial No. 343,656

8 Claims.

This invention relates to railroad car trucks and more particularly to novel Wear means arranged at the connection between an end side frame member and the equalizer of such trucks. Different types of such wear means are disclosed in the Larsen et a1. Patent 1,665,416, dated April 10, 1928, and the primary purpose of the present invention is to improve the construction illustrated in that patent.

Withthe foregoing object outlined and with other objects in View which will appear as the description proceeds, the invention consists in the novel features hereinafter described in detail, illustrated in the accompanying drawing, and more particularly pointed out in the appended claims.

In the drawing:

Fig. I is a side elevation of a medial portion of a six-wheel railway car truck and showing our improvements applied thereto.

Fig. 2 is an enlarged end view of a portion of the equalizer and a portion of one of the side frame horns and. illustrating the means connecting these parts, and our improvements.

Fig. 3' is a vertical sectional view taken on the line 33 of Fig. 2, but with the upper and lower wear blocks shown in elevation.

Referring to the drawing, 4 designates one end portion of an equalizer having a pair of upstanding spaced ears 5 with a shelf 6 arranged between the same. The shelf supports a pad I having a central aperture 8, and this pad may be made of a wide range ofmaterials capable of providing uniform load distribution. We prefer to make it of some resilient material such as rubber, neoprene or the like, so that it may perform a dual function consisting of uniform distribution of load over a more or less uneven bearing surface 6 and provision of resiliency at the joint. However, the pad may be made of various fabrics, soft metals, plastics, etc. capable of providing uniform load distribution.

The pad supports a bottom wear block 9 having an arc-shaped concave upper surface l0 and a plane lower surface H, the latter resting on the pad.

An upper Wear block l2 has a lower areshaped convex surface slidably engaging the curved surface l0, and an upper plane surface I3.

The latter slidably engages a wear plate 14 that is secured to the bottom of one end l5 of one of the side frame members I6 by any suitable means such as welds IT.

of the side frame, and it is to be noted that the bolt is of less diameter than the aperture 20, so that the wear plate M can slide. to a limited degree along the upper surface of the upper wear block I2.

Wear pads 2| integral with the ears 5 cooperate with the lower wear block, and the latter has a depending pin 22 which extends through the aperture 8 as well as through a vertical aperture 23 in the shelf 6. Below the latter, the pin has a transverse hole 24 for the reception of a suitable retainer, such as a cotter pin 25, which also extends through holes in the sides of the equalizer. These holes preferably merge with cavities or recesses 26 and 21, the former being. adapted to receive the head 28 of the cotter pin, and the latter to receive the spread portions 29 of the legs of the pin.

With reference to the novel features of the present construction, the following will be noted:

1. The equalizer and frame connection must accommodate both rotation and sliding action. The rotation takes place between the arc-shaped surfaces of the wear blocks, and the sliding action occurs between the bearing surface on the side frame and the top. of the top wear block. Since the shape of the blocks prevent disengagement of the top block or loss thereof after assembly, the latter can have its entire top flat. This construction eliminates an undesirable feature heretofore experienced and in addition reduces wear by providing more wear resisting material on the frame surface and by spreading the load over a greater area, thereby reduces the unit bearing pressure.

2. The use of a resilient or load distribution pad. between the bottom wear block and the seat on the equalizer serves to distribute the load uniformly over the bearing surfaces and to neutralize the effect of any unevenness in the surfaces. The necessity of machining these surfaces is, therefore, eliminated. This pad preferably provides resilience in the connection tending to cushion rail shocks or blows which would otherwise be transmitted' from the. equalizer through this. connection to the side frame and then to the body of the vehicle.

3. The new design has been further improved by the provision of novel retaining means for the bottom wear block and the resilient pad. This means, consisting of a large cotter key or a bolt, provides positive retention of the parts and is easily assembled or disassembled for in- July 7, 1942.

MACHINE FOR A. J. HAUG 2,289,013

Filed June 4, 1938 ATTORNEY. 

